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9.5
SEPPmail Secure Email Gateway: Malicious PDFs Can Execute OS Commands
CVE-2026-27441
Summary
A security issue in older versions of SEPPmail Secure Email Gateway can allow attackers to execute malicious code on the system by sending a specially crafted PDF email. This vulnerability can lead to unauthorized access and data theft. Update to version 15.0.1 or later to fix the issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| seppmail | seppmail | <= 15.0.1 | – |
Original title
SEPPmail Secure Email Gateway before version 15.0.1 insufficiently neutralizes the PDF encryption password, allowing OS command execution.
Original description
SEPPmail Secure Email Gateway before version 15.0.1 insufficiently neutralizes the PDF encryption password, allowing OS command execution.
nvd CVSS3.1
9.8
nvd CVSS4.0
9.5
Vulnerability type
CWE-78
OS Command Injection
Published: 4 Mar 2026 · Updated: 13 Mar 2026 · First seen: 6 Mar 2026